21279918

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{503}}^1\times {\mathrm{641}}^1$

素因数の和:1160

約数の個数: 32

約数和(自身を含む): 46593792

約数和(自身を除く): 25313874

約数列:

[1, 2, 3, 6, 11, 22, 33, 66, 503, 641, 1006, 1282, 1509, 1923, 3018, 3846, 5533, 7051, 11066, 14102, 16599, 21153, 33198, 42306, 322423, 644846, 967269, 1934538, 3546653, 7093306, 10639959, 21279918]

約数ペア:

[(1, 21279918), (2, 10639959), (3, 7093306), (6, 3546653), (11, 1934538), (22, 967269), (33, 644846), (66, 322423), (503, 42306), (641, 33198), (1006, 21153), (1282, 16599), (1509, 14102), (1923, 11066), (3018, 7051), (3846, 5533)]